As the Union Pacific dropped its secondary trains, it had to add stops to the top-of-the-line streamliners to provide service to smaller communities that the streamliners had originally by-passed. For example, in 1937, the City of Portland made just twelve stops on its 39-3/4-hour journey from Chicago to Portland, while passengers from other cities along the route could take the Portland Rose or Pacific Limited. By 1958, the Pacific Limited was off the timetable and the Portland Rose rerouted to Portland-St. Louis, so the City of Portland was scheduled to make as many as 27 stops (many of them flag stops) between Chicago and Portland, adding an hour to its scheduled time.
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In 1959, however, UP combined the City of Portland with the City of Denver, forcing the westbound train to travel south from Julesberg to Denver and then north again to Laramie. This added nearly three hours to the City of Portland‘s schedule.